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Preprint article · Journal article

Measurement of unique magnetic and superconducting phases in oxygen-doped high-temperature superconductors La2-xSrxCuO4+y

By Udby, Linda1; Larsen, Jacob2; Christensen, Niels Bech2; Boehm, M.3; Niedermayer, Ch4; Mohottala, H. E.5; Jensen, Thomas Bagger Stibius2; Toft-Petersen, Rasmus; Chou, F. C.6; Andersen, Niels Hessel2; Lefmann, Kim1; Wells, B. O.7 ...and 2 more

From

University of Copenhagen1

Department of Physics, Technical University of Denmark2

Institut Laue-Langevin3

Paul Scherrer Institute4

University of Hartford5

National Taiwan University6

University of Connecticut7

We present a combined magnetic neutron scattering and muon spin rotation study of the nature of the magnetic and superconducting phases in electronically phase separated La2-xSrxCuO4+y, x=0.04, 0.065, 0.09. For all samples, we find long-range modulated magnetic order below TN≃Tc=39 K. In sharp contrast to oxygen-stoichiometric La2-xSrxCuO4, we find that the magnetic propagation vector as well as the ordered magnetic moment is independent of Sr content and consistent with that of the “striped” cuprates.

Our study provides direct proof that superoxygenation in La2-xSrxCuO4+y allows the spin stripe ordered phase to emerge and phase separate from superconducting regions with the hallmarks of optimally doped oxygen-stoichiometric La2-xSrxCuO4.

Language: English
Year: 2013
Pages: 227001
ISSN: 10797114 and 00319007
Types: Preprint article and Journal article
DOI: 10.1103/PhysRevLett.111.227001
ORCIDs: 0000-0002-2816-6825 , 0000-0003-4282-756X , Christensen, Niels Bech and Toft-Petersen, Rasmus
Keywords

cond-mat.mtrl-sci cond-mat.str-el cond-mat.supr-con

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